@article{nassuno_2003,  title={Reforma da previdência e graus de solidariedade},  volume={23},  ISSN={0101-3157},  url={https://doi.org/10.1590/0101-31572004-0686},  DOI={10.1590/0101-31572004-0686},  number={2},  journal={Brazilian Journal of Political Economy},  publisher={Centro de Economia Política},  author={NASSUNO, MARIANNE},  year={2003},  month={Apr},  pages={271–275} }